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Preparation and electrochemical properties of urchin-like α-Fe_2O_3 nanomaterials

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Science China(Technological Sciences) 2010年第7期53卷 1897-1903页

作者： TONG GuoXiu1,2, GUAN JianGuo2, WU WenHua1, LI LiangChao1, GUAN Yao2 & HUA Qiao1 1 College of Chemistry and Life Sciences, zhejiang Normal University, Jinhua 321004, China 2 State key laboratory of advanced technology for Materials Synthesis and Processing, Wuhan University of technology, Wuhan 430070, China 1. College of Chemistry and Life Sciences Zhejiang Normal University Jinhua 321004 China2. State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China

Based on a facile glucose-guided hydrolyzing-heat-treating approach, urchin-like α-Fe2O3 nanomaterials with controllable morphology and crystallinity were prepared via adjusting the heat-treating temperature, and their electrochemical performances were investigated. The results showed that changing the heat-treating temperature can effectively control the structure and electrochemical property of the as-made products. The urchin-like α-Fe2O3 nanomaterials obtained by heat-treating at 300°C, composed of a mass of the shuttle fibrous brunches, had higher initial discharge capacity(1475 mAhg-1) than those consisting of nanorods formed at 700°C. The above difference is ascribed to the urchin-like samples obtained at the relatively low heat-treating temperature, which, with low crystallinity, large SBET, and well-regulated porous, is helpful to the adsorption of electrolyte and the transport of lithium ion, resulting in the high activity and discharge-charge capacity.

关键词： urchin-like nanomaterials hematite electrochemical performance glucose-guided hydrolyzing-heat-treating approach

First principles studies on the electronic structures of LiMxFe1-xPO4 （M = Co, Ni and Rh）

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Chinese Physics B 2007年第10期16卷 3042-3045页

作者：欧阳小芳施思齐欧阳楚英姜迪友刘德生叶志清雷敏生 Department of Physics Jiangxi Normal University Nanchang 330022 China Department of Physics Zhejiang Sci-Tech University Hangzhou 310018 China key laboratory of advanced Textile Materials and manufacturing technology (zhejiang Sci-Tech University) Ministry of Education Hangzhou 310018 China key laboratory for Opt-electronics of Jiangxi province Nanchang 330022 China

The local crystal structures and electronic structures of LiMxFe1-xPO4 （M = Co, Ni, Rh） are studied through first-principles calculations. The lattice constants and unit cell volumes are smaller for the Co and Ni doped materials than for pure LiFePO4, while larger than for the Rh doped material. The local structures around M atoms in the doped materials are studied in details. The total density of states （DOS） and atomic projected DOS （PDOS） are all calculated and analysed in detail. The results give a reasonable prediction to the improvement of electronic conductivity through Fe-site doping in LiFePO4 material.

关键词： electronic properties density of states first principles olivine

Vacuum wetting of Ag/TA2 to develop a novel micron porous Ti with significant biocompatibility and antibacterial activity

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Journal of Materials Science & technology 2022年第21期116卷 180-191页

作者： Guanpeng Liu Yulong Li Ming Yan Jicai Feng Jian Cao Min Lei Quanwen Liu Xiaowu Hu Wenqin Wang Xuewen Li key lab for Robot and Welding Automation of Jiangxi province Mechanical and Electrical Engineering SchoolNanchang UniversityNanchang 330031China Jiangxi Provincial key laboratory of Interdisciplinary Science Nanchang UniversityNanchang 330031China Department of Materials Science and Engineering and Shenzhen key laboratory for Additive manufacturing of High-Performance Materials Southern University of Science and TechnologyShenzhen 518055China State key lab of advanced Welding and Joining Harbin Institute of TechnologyHarbin 150001China The National Engineering Research Center for Bioengineering Drugs and the Technologies Institute of Translational MedicineNanchang UniversityNanchang 330031China The Engineering Training Center of Nanchang University Mechanical and Electrical Engineering SchoolNanchang UniversityNanchang 330031China

Porous Ti with low modulus,excellent bio-corrosion resistance,biocompatibility,and antibacterial activity is highly pursued as advanced implant *** this work,a new approach to prepare micron porous structures on the surface layer of a grade 2 commercially-pure Ti(TA2)was proposed,which utilized a simple vacuum wetting process of pure Ag on the surface of *** microstructure,corrosion resistance,biocompatibility,mechanical properties,antibacterial ability,and formation mechanism of the asfabricated porous Ti were *** results show that the pores(with average pore sizes of 0.5-5μm)are distributed on the surface layer of the TA2 with a depth of~10μ*** particular,a large number of silver nanoparticles(Ag NPs)form which are dispersed on the porous *** formation mechanisms of the porous structures and Ag NPs were elucidated,suggesting that the volatilization/sublimation of Ag in TA2 is *** porous Ti possesses excellent bio-corrosion resistance,surface wettability,biocompatibility,antibacterial activity,and a relatively low elastic modulus of 40-55 GPa,which may have a promising future in the field of orthopedic *** work also provides a novel idea for the development of advanced porous Ti materials for orthopedic-related basic research and biomedical applications.

关键词： Porous titanium Biomaterials Vacuum wetting Porous surface Antibacterial activity

All-dielectric photonic crystal with unconventional higher-order topology

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Photonics Research 2021年第5期9卷 668-677页

作者： SHIQIAO WU BIN JIANG YANG LIU JIAN-HUA JIANG School of Physical Science and technology Soochow UniversitySuzhou 215006China Collaborative Innovation Center of Suzhou Nano Science and technology Suzhou 215006China key lab of advanced Optical manufacturing Technologies of Jiangsu province and key lab of Modern Optical Technologies of Ministry of Education of China Soochow UniversitySuzhou 215006China

Photonic crystals(PhCs) have been demonstrated as a versatile platform for the study of topological *** recent discovery of higher-order topological insulators introduces new aspects of topological PhCs that are yet to be explored. Here, we propose an all-dielectric PhC with an unconventional higher-order band *** the conventional spectral features of gapped edge states and in-gap corner states, topological band theory predicts that the corner boundary of the higher-order topological insulator hosts a 2/3 fractional charge. We demonstrate that in the PhC such a fractional charge can be verified from the local density-of-states of photons,through the concept of local spectral charge as an analog of the local electric charge due to the band filling anomaly in electronic systems. Furthermore, we show that by introducing a disclination in the proposed PhC, localized states and a 2/3 fractional spectral charge emerge around the disclination core. The emergence of the fractional spectral charges and topological boundary modes here, however, is distinct from the known cases;particularly by the 2/3 fractional spectral charges and the unique topological indices. The predicted effects can be readily observed in the state-of-the-art experiments and may lead to potential applications in integrated and quantum photonics.

关键词： topological fractional dielectric

advanced Mueller matrix ellipsometry:Instrumentation and emerging applications

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Science China(Technological Sciences) 2022年第9期65卷 2007-2030页

作者： CHEN XiuGuo GU HongGang LIU JiaMin CHEN Chao LIU ShiYuan State key laboratory of Digital manufacturing Equipment and technology Huazhong University of Science and TechnologyWuhan 430074China Optics Valley laboratory Wuhan 430074China

Mueller matrix ellipsometry(MME)provides the 4×4 Mueller matrix of a sample under test,which determines how the state of polarization is changed as light interacts with the *** to the redundant information contained in the Mueller matrix,MME has gained more and more extensive applications in the characterization of surfaces,interfaces,thin films,and *** addition,the instrumentation of MME has also achieved great developments since its advent in the 1970 *** this paper,we will first review the basic principle as well as the common system layouts of MME for the full Mueller matrix ***,the basic procedure of ellipsometry data analysis is *** that,some new developments in MME in our lab for different applications are introduced,including the broadband MME,the high-resolution imaging MME,and the high-speed *** emerging applications of the developed MMEs are also *** and perspectives of the advanced ellipsometry are finally drawn and discussed.

关键词： ellipsometry Mueller matrix Mueller matrix ellipsometry imaging ellipsometry high-speed ellipsometry

MoC nanocrystals confined in N-doped carbon nanosheets toward highly selective electrocatalytic nitric oxide reduction to ammonia

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Nano Research 2022年第10期15卷 8890-8896页

作者： Ge Meng Mengmeng Jin Tianran Wei Qian Liu Shusheng Zhang Xianyun Peng Jun Luo Xijun Liu key laboratory of Carbon Materials of zhejiang province College of Chemistry and Materials EngineeringWenzhou UniversityWenzhou 325035China Institute for New Energy Materials and Low-Carbon Technologies Tianjin Key Lab for Photoelectric Materials&DevicesSchool of Materials Science and EngineeringTianjin University of TechnologyTianjin 300384China MOE key laboratory of New Processing technology for Non-Ferrous Metals and Materials and Guangxi Key Laboratory of Processing for NonFerrous Metals and Featured MaterialsSchool of ResourceEnvironments and MaterialsGuangxi UniversityNanning 530004China Institute for advanced Study Chengdu UniversityChengdu 610106China College of Chemistry Zhengzhou UniversityZhengzhou 450000China Institute of zhejiang University–Quzhou Quzhou 324000China

Electrochemical nitric oxide reduction reaction(NORR)to produce ammonia(NH3)under ambient conditions is a promising alternative to the energy and carbon-intensive Haber–Bosch approach,but its performance is still ***,molybdenum carbides(MoC)nanocrystals confined by nitrogen-doped carbon nanosheets are first designed as an efficient and durable electrocatalyst for catalyzing the reduction of NO to NH3 with maximal Faradaic efficiency of 89%±2%and a yield rate of 1,350±15μg·h^(−1)·cm^(−2) at the applied potential of−0.8 V *** hydrogen electrode(RHE)as well as high stable activity with negligible current density and NH3 yield rate decays over a 30 h continue the ***,as a proof-of-concept of Zn–NO battery,it achieves a peak power density of 1.8 mW·cm^(−2) and a large NH3 yield rate of 782±10μg·h^(−1)·cm^(−2),which are comparable to the best-reported *** calculations reveal that the MoC(111)has a strong electronic interaction with NO molecules and thus lowering the energy barrier of the potential-determining step and suppressing hydrogen evolution *** work suggests that Mo-based materials are a powerful platform providing great opportunities to explore highly selective and active catalysts for NH3 production.

关键词： ammonia electrosynthesis green route molybdenum carbides(MoC)nanocrystals nitric oxide reduction reaction high selectivity

Recent advances and challenges in materials for 3D bioprinting

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Progress in Natural Science:Materials International 2020年第5期30卷 618-634页

作者： Hongli Mao Li Yang Haofang Zhu Lihuang Wu Peihong Ji Jiquan Yang Zhongwei Gu College of Materials Science and Engineering Nanjing Tech University Research Institute for Biomaterials Tech Institute for Advanced Materials Nanjing Tech University NJTech-BARTY Joint Research Center for Innovative Medical technology Nanjing Industry Institute for advanced Intelligent Equipment Jiangsu key lab of 3D Printing Equipment and manufacturing Nanjing Normal University

3 D bioprinting has been developed as a promising technology in a wide variety of biomedical ***, the successful implementation of bioprinting is still heavily restricted by the relatively narrow range of printable and biocompatible materials. Recently, many comprehensive reviews of the main bioprinting methods,commonly used bioprinting materials and the trending bioprinting applications have been carried out. In this review, we focused on the trends in the development of materials for 3 D bioprinting. The significance and recent advances of ECM-based materials, multi-material and stimuli-responsive materials for bioprinting were summarized successively. Moreover, the challenges in current studies and future perspectives of materials for 3 D bioprinting were discussed.

关键词： 3D bioprinting ECM-based materials Multi-material Composite and hybrid materials Stimuli-responsive materials

Salidroside Reduces PDE2A Expression by Down-regulating p53 in Human Embryonic Lung Fibroblasts

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Biomedical and Environmental Sciences 2019年第2期32卷 140-143页

作者： XING Wen Min CHEN Sha Sha WANG San Ying GAO Wen Yan WAN Xiao Qing SU Hui Li YANG Yi ZHANG Jing YAN Jing MAO Gen Xiang zhejiang Provincial key lab of Geriatrics Department of Geriatrics Zhejiang Hospital Institute of Materia Medica Zhejiang Academy of Medical Sciences

Salidroside(SAL) is a glucoside of tyrosol and a key constituent of Rhodiola rosea L. The diverse pharmacological activities of SAL include anti-inflammatory, cardioprotective, and neuroprotective effects(1)Our previous investigation showed that the anti-aging effects of SAL involve reductions of the levels of advanced glycation end products in a D-galactose induced mouse model(2)Additionally.

关键词： PDE SAL Figure

Electrocatalytic CO_(2) reduction towards industrial applications

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Carbon Energy 2023年第1期5卷 154-180页

作者： Dezhi Xu Kangkang Li Baohua Jia Wenping Sun Wei Zhang Xue Liu Tianyi Ma Liaoning province key laboratory for Green Synthesis and Preparative Chemistry of advanced Materials Liaoning UniversityShenyangLiaoningPR China CSIRO Energy Mayfield WestNew South WalesAustralia College of Engineering Peking UniversityBeijingChina School of Science RMIT UniversityMelbourneVictoriaAustralia School of Materials Science and Engineering State Key Laboratory of Clean Energy UtilizationZhejiang UniversityHangzhouZhejiangPR China

Recently,research on the electrocatalytic CO_(2) reduction reaction(eCO_(2)RR)has attracted considerable attention due to its potential to resolve environmental problems caused by CO_(2) while utilizing clean energy and producing high‐value‐added *** theoretical research in the lab has demonstrated its feasibility and ***,industrialization is mandatory to realize the economic and social value of eCO_(2)*** industrial application of eCO_(2)RR,more criteria have been proposed for eCO_(2)RR research,including high current density(above 200 mA cm^(−2)),high product selectivity(above 90%),and long‐term *** fulfill these criteria,the eCO_(2)RR system needs to be systematically designed and *** this review,recent research on eCO_(2)RR for industrial applications is *** review starts with focus on potential industrial catalysts in eCO_(2)***,potential industrial products are proposed in eCO_(2)*** products,including carbon monoxide,formic acid,ethylene,and ethanol,all have high market demand,and have shown high current density and product selectivity in theoretical ***,the innovative components and strategy for industrializing the eCO_(2)RR system are also highlighted here,including flow cells,seawater electrolytes,solid electrolytes,and a two‐step ***,some instructions and possible future avenues are presented for the prospects of future industrial application of eCO_(2)RR.

关键词： carbon dioxide reduction carbon neutral electrocatalysis industrial application